It might be counterproductive, but I decided to do a dual-mode shave for a while; straight on the face, DE on the neck. I was getting tired of massive razor burn on my left side. There's kind of a 'hollow' that I'm just not getting right yet. Anyway, a couple days in on this, I'm noticing improvement in my technique on the face. I might keep this going for a few weeks, or months, then maybe my blade-handling will have improved enough to tackle my neck again.